Patents by Inventor Christian Scheufler

Christian Scheufler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11931432
    Abstract: The present invention relates to a dental composition comprising a specific radically polymerizable compound and a radical initiator system. Furthermore, the present invention relates to the specific radically polymerizable compound and its use in a dental composition. The specific radically polymerizable compound of the present invention has an allyl (meth)acrylamide group and a phosphoric acid ester group.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 19, 2024
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Christoph Fik, Maximilian Maier, Joachim E. Klee, Christian Scheufler
  • Patent number: 11904030
    Abstract: The present invention relates to a dental composition comprising a radically polymerizable compound, a redox initiator system comprising one or more clathrate compounds comprising a host molecule and one or more guest molecules, wherein the host molecule is selected from cyclodextrines, crown ethers, cucurbituriles and calixarenes and the one or more guest molecules are reducing agents, and an oxidizing agent. Furthermore, the present invention relates to a use of the redox initiator system in a dental composition.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 20, 2024
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Florian Szillat, Caroline Renn, Christian Scheufler, Jörg Brenneisen
  • Patent number: 11883510
    Abstract: The present invention relates to a dental composition comprising a photoinitiator system comprising a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier. Furthermore, the present invention relates to a use of the particulate carrier in a dental composition. The particulate carrier displays multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups on the surface, for crosslinking monomers, oligomers and/or polymers having one or more polymerizable double bonds.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: January 30, 2024
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Maximilian Maier, Joachim E. Klee, Christian Scheufler, Caroline Renn, Florian Szillat
  • Publication number: 20230132972
    Abstract: The present invention relates to a process for the preparation of a dental resin-modified glass ionomer composition comprising a polymerizable polyacidic polymer, wherein the process comprises the following steps as further defined in claim 1.
    Type: Application
    Filed: December 11, 2017
    Publication date: May 4, 2023
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Christian SCHEUFLER, Maximilian MAIER, Joachim E. KLEE, Caroline RENN
  • Patent number: 11628125
    Abstract: The present invention relates to an initiator modified polyacidic polymer having a covalently bonded initiator compound, and to a dental resin-modified glass ionomer composition comprising this polyacidic polymer. Furthermore, the present invention relates to a use of the initiator modified polyacidic polymer for the preparation of a dental composition. The covalently bonded initiator compound of the initiator modified polyacidic polymer may be any compound of a redox initiator system, a photoinitiator system, for example a Norrish type I or II photoinitiator, an electron donor component, a sensitizer component or a coinitiator component.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: April 18, 2023
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Maximilian Maier, Joachim E. Klee, Christian Scheufler, Caroline Renn, Florian Szillat
  • Publication number: 20230100120
    Abstract: The present invention relates to a dental composition comprising a photoinitiator system comprising a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier. Furthermore, the present invention relates to a use of the particulate carrier in a dental composition. The particulate carrier displays multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups on the surface, for crosslinking monomers, oligomers and/or polymers having one or more polymerizable double bonds.
    Type: Application
    Filed: October 4, 2022
    Publication date: March 30, 2023
    Applicant: DENTSPLY SIRONA INC.
    Inventors: Maximilian MAIER, Joachim E. KLEE, Christian SCHEUFLER, Caroline RENN, Florian SZILLAT
  • Patent number: 11319392
    Abstract: Described herein are a polymerizable antibacterial nanogel and hydrolytically stable antibacterial nanogel composition and methods of preparing such compositions, use of polymerizable antibacterial nanogels and hydrolytically stable antibacterial nanogels as additives to a dental product, such as a resin monomer, a cement, an adhesive and composite formulations. Methods and compositions for forming hydrolytically stable antibacterial monomers are also described.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: May 3, 2022
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Xiaoming Jin, Christian Scheufler, Joachim E. Klee, Hui Lu
  • Publication number: 20220062117
    Abstract: Described herein is a dental composition containing a polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit. The polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit is obtained without use of organo-metal catalysts and isocyanates and by a reaction between an at least one component A having at least one cyclic carbonate group with an at least one component B having at least one of primary amine functional group and secondary amine functional group. The present disclosure relates to use of the polymerizable compound having at least one optionally derivatized ?-hydroxy urethane unit for the preparation of a dental composition, in particular a dental composite, a glass ionomer, a dental cement, a dental sealant, and a dental adhesive.
    Type: Application
    Filed: December 17, 2019
    Publication date: March 3, 2022
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Joachim E. KLEE, Matthias WORM, Christian SCHEUFLER, Oliver ELSNER, Thomas TIGGES
  • Patent number: 11224557
    Abstract: The present invention relates to a dental composition which is a resin modified dental cement composition, comprising a radically polymerizable compound and a redox initiator system comprising one or more clathrate compounds comprising a host molecule and one or more guest molecules, wherein the guest molecule is an oxidising agent selected from organic peroxides and organic hydroperoxides. Furthermore, the present invention relates to a use of the redox initiator system in a dental composition which is a resin modified dental cement composition.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: January 18, 2022
    Assignee: DENTSPLY SIRONA INC
    Inventors: Florian Szillat, Caroline Renn, Oliver Elsner, Joachim Klee, Christian Scheufler
  • Patent number: 11116702
    Abstract: The present invention relates to a dental composition comprising a specific polymerizable compound and a polymerization initiator system. Furthermore, the present invention relates to the specific polymerizable compound as such and its use in a dental composition. The specific polymerizable compound of the present invention has an N-allyl (meth)acrylamide group, which nitrogen atom is substituted with an alkyl or alkenyl group optionally substituted by a group selected from a hydroxyl group, a C1-4 alkoxy group, a tertiary amino group and a carboxyl group, wherein 1 to 8 carbon atoms in the main chain of the alkyl or alkenyl group may independently from each other be replaced by a heteroatom selected from an oxygen atom and a sulfur atom.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: September 14, 2021
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Christoph Fik, Joachim E. Klee, Christian Scheufler, Christoph Weber
  • Patent number: 11110037
    Abstract: The present disclosure relates to methods and compositions to stabilize a nanogel and use of such nanogel as additives in dental compositions.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: September 7, 2021
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Xiaoming Jin, Bassam Usta, Christian Scheufler, Joachim E. Klee, Thomas Tigges, Kira Neuhaus, Jörg Brenneisen, Hui Lu
  • Publication number: 20210069070
    Abstract: The present invention relates to an initiator modified polyacidic polymer having a covalently bonded initiator compound, and to a dental resin-modified glass ionomer composition comprising this polyacidic polymer. Furthermore, the present invention relates to a use of the initiator modified polyacidic polymer for the preparation of a dental composition. The covalently bonded initiator compound of the initiator modified polyacidic polymer may be any compound of a redox initiator system, a photoinitiator system, for example a Norrish type I or II photoinitiator, an electron donor component, a sensitizer component or a coinitiator component.
    Type: Application
    Filed: August 30, 2018
    Publication date: March 11, 2021
    Applicant: DENTSPLY SIRONA INC.
    Inventors: Maximilian MAIER, Joachim E. KLEE, Christian SCHEUFLER, Caroline RENN, Florian SZILLAT
  • Publication number: 20210069069
    Abstract: The present invention relates to a dental composition comprising a photoinitiator system comprising a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier. Furthermore, the present invention relates to a use of the particulate carrier in a dental composition. The particulate carrier displays multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups on the surface, for crosslinking monomers, oligomers and/or polymers having one or more polymerizable double bonds.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 11, 2021
    Applicant: DENTSPLY SIRONA INC.
    Inventors: Maximilian MAIER, Joachim E. KLEE, Christian SCHEUFLER, Caroline RENN, Florian SZILLAT
  • Patent number: 10899861
    Abstract: The present invention relates to a polymerizable polyacidic polymer and to a process for preparing the polymerizable polyacidic polymer. Furthermore, the present invention relates to an aqueous dental composition comprising the polymerizable polyacidic polymer, to a use of the polymerizable polyacidic polymer for the preparation of a dental composition and to an acrylic acid derivative copolymer.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: January 26, 2021
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Joachim Klee, Caroline Renn, Florian Szillat, Oliver Elsner, Christian Scheufler, Ulrich Lampe, Helmut Ritter
  • Publication number: 20200405585
    Abstract: The present invention relates to a dental composition comprising a radically polymerizable compound, a redox initiator system comprising one or more clathrate compounds comprising a host molecule and one or more guest molecules, wherein the host molecule is selected from cyclodextrines, crown ethers, cucurbituriles and calixarenes and the one or more guest molecules are reducing agents, and an oxidizing agent. Furthermore, the present invention relates to a use of the redox initiator system in a dental composition.
    Type: Application
    Filed: March 5, 2019
    Publication date: December 31, 2020
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Florian SZILLAT, Caroline RENN, Christian SCHEUFLER, Jörg BRENNEISEN
  • Patent number: 10849831
    Abstract: A dental composition comprising a polymerizable acidic compound of the following formula (I): wherein R1 which may be the same or different when more than one R1 is present, represents a hydrogen atom or a methyl group; R2 which may be the same or different when more than one R2 is present, represents a hydrogen atom, a straight-chain or branched C1-6 alkyl group, a C3-8 cycloalkyl group or a straight-chain or branched C2-6 alkenyl group; R3 which may be the same or different when more than one R3 is present, represents a monovalent organic moiety substituted by a group selected from —COOM, —PO3M, —O—PO3M2 and —SO3M, wherein M independently represents a hydrogen atom or a metal atom; or R2 and R3 form together a divalent organic moiety substituted by a group selected from —COOM, —PO3M, —O—PO3M2 and —SO3M, wherein M independently represents a hydrogen atom or a metal atom; L represents a (m+n+1)-valent organic linker group; X represents a hydrogen atom or a group selected from —COOM, —PO3M, —O—PO3M2 or —S
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: December 1, 2020
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Caroline Renn, Florian Szillat, Joachim E. Klee, Christian Scheufler, Oliver Elsner, Thomas Tigges, Mattias Worm, Helmut Ritter, Xiaoming Jin
  • Patent number: 10718394
    Abstract: A disk brake for a utility vehicle is provided. A brake caliper of the disk brake includes a receiving chamber configured to receive a brake application device with a pivotable brake lever. The brake lever is supported at one end on a bridge supporting at least one brake piston and at the other end on a wall of the brake caliper forming a caliper head. A pivot bearing is provided for supporting the brake lever on the caliper head or the bridge. The pivot bearing includes a receptacle having a circular-arc-shaped cross-section and has a pivoting body configured to be located in the receptacle. The brake lever is retained in such a way that the brake lever is secured against displacement transversely to the pivoting direction of the brake lever by at least one securing element arranged in the region of the pivoting body extending axially on both sides of the securing element.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 21, 2020
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge Gmbh
    Inventors: Philipp Adamczyk, Christian Scheufler, Matthias Klingner
  • Publication number: 20200157266
    Abstract: Described herein are a polymerizable antibacterial nanogel and hydrolytically stable antibacterial nanogel composition and methods of preparing such compositions, use of polymerizable antibacterial nanogels and hydrolytically stable antibacterial nanogels as additives to a dental product, such as a resin monomer, a cement, an adhesive and composite formulations. Methods and compositions for forming hydrolytically stable antibacterial monomers are also described.
    Type: Application
    Filed: August 29, 2019
    Publication date: May 21, 2020
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Xiaoming JIN, Christian Scheufler, Joachim E. KLEE, Hui LU
  • Patent number: 10624821
    Abstract: The present invention relates to an aqueous dental glass ionomer composition comprising (A) a reactive particulate glass, (B) a water-soluble, polymerizable polymer comprising acidic groups, which is reactive with the particulate glass in a cement reaction, whereby the polymerizable polymer has a polymer backbone and hydrolysis-stable pendant groups having one or more polymerizable carbon-carbon double bonds, wherein the polymerizable polymer is obtainable by a process comprising a) a step of copolymerizing a mixture comprising (i) a first copolymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and (ii) a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary amino groups and a second polymerizable organic moiety, for obtaining an amino group containing copolymer; b) a step of coupling to the amino group containing copolymer a compound having a polymerizable moiety and a functional
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: April 21, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Caroline Renn, Oliver Elsner, Julia Gansel, Christian Scheufler, Uwe Walz, Christoph Weber, Joachim E. Klee, Maxmilian Maier
  • Patent number: 10610462
    Abstract: The present disclosure relates to an aqueous dental glass ionomer composition comprising a reactive particulate glass, a water-soluble, polymerizable polymer which is reactive with the particulate glass in a cement reaction, a hydrolysis-stable, water-soluble monomer having a single polymerizable double bond and optionally a carboxylic acid group or hydroxyl group; and a polymerization initiator system, wherein the polymerizable polymer is obtainable by a process comprising a step of polymerizing a mixture comprising a first polymerizable monomer comprising at least one optionally protected carboxylic acid group and a first polymerizable organic moiety, and optionally a second copolymerizable monomer comprising one or more optionally protected primary and/or secondary hydroxyl and/or amino group(s) and a second polymerizable organic moiety, for obtaining an water-soluble polymer; a step of coupling to the water-soluble polymer a compound having a polymerizable moiety and a functional group reactive with an op
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 7, 2020
    Assignee: DENTSPLY SIRONA INC.
    Inventors: Caroline Renn, Oliver Elsner, Maximilian Maier, Florian Szillat, Joachim Klee, Christoph Weber, Uwe Walz, Christian Scheufler, Helmut Ritter, Andrew Lichkus, Xiaoming Jin